MAC TOOLS EM721 Manual Del Usuario página 60

Thermistor Resistance Change Test
Meter setup to check resistance change of thermistors:
•
Set the rotary switch to resistance (Ω ) setting.
•
If " " is present on the display, press the "DWL" button until " " disappears.
•
Insert the black lead in the "COM" jack.
•
Insert the red lead in the "
Disconnect the sensor connector.
Connect:
•
Black test probe to the negative (-) terminal of the sensor.
•
Red test probe to the positive (+) terminal of the sensor.
Resistance reading should match the temperature of the sensor.
NOTE: Refer to the manufacturer's specifications for resistance vs temperature for the sensor.
Temperature can be checked using the previous procedure.
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Black
" jack.
Red
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